Tom Barrack is a legendary real estate investor that few people know about. The 10/31/05 Fortune has a good profile on him titled “I’m Tom Barrack and I’m Getting Out.” Barrack’s lead quote concerns polo, of which he is an avid player.
“I feel totally safe playing polo on a field full of pros, but when amateurs are all over the field, someone can get killed. They have more guts than brains. They charge after every ball and don’t know when to hold back.”
Of course, this applies broadly. Be careful out there – make sure you know who else is on the field with you.